The weld quality of mesh frame accessories is divided into three levels: the first level weld shall pass the appearance inspection, ultrasonic inspection and X-ray inspection; The second-grade weld shall be qualified in appearance inspection and ultrasonic inspection; Grade iii weld shall be qualified by appearance inspection.

Net rack accessories in the process of processing will produce deformation, so must pass reasonable welding methods to control welding deformation.

In order to ensure the quality of welding, it is necessary to pay attention to the appearance inspection and internal inspection, whether there are pores, edging, welding nodules, welding seam lower than the base material, welding seam width and welding height are up to the standard. These are all things that the inspector should pay attention to in the appearance inspection, which requires the inspector to be careful enough to observe with the naked eye or magnifying glass. Internal testing, including: commonly used four non-destructive testing technology namely ray, ultrasonic, penetration and magnetic powder. The first two are weld internal inspection and the second two are weld surface inspection.

It is very important to check the quality of welded ball. Years of production experience tells us that if there are serious welding defects in the welded joint, it is possible to cause part of the structure fracture in the harsh environment. It even causes serious accidents. Therefore, the purpose of welding testing is very important: product quality is the life of the enterprise. Is the basic guarantee of the enterprise based on!